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IPTEK Journal of Proceedings Series
Published by Institut Teknologi Sepuluh Nopember Surabaya
ISSN : 23546026     EISSN : -     DOI : -
Core Subject : Science,
Computer Science & IT
IPTEK Journal of Proceedings Series publishes is a journal that contains research work presented in conferences organized by Institut Teknologi Sepuluh Nopember. ISSN: 2354-6026. The First publication in 2013 year from all of full paper in International Conference on Aplied Technology, Science, and Art (APTECS). It publish one time a year after the held of APTECS event.
Arjuna Subject : -
Articles 1,079 Documents
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Mortars and Concrete Incorporating Palm Oil Fuel Ash and Fly Ash Tonduba, Yvonne William; Mirza, Jahangir
IPTEK Journal of Proceedings Series No 6 (2017): The 3rd International Conference on Civil Engineering Research (ICCER) 2017
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2017i6.3269

Abstract

Number of researchers reported that Palm Oil Fuel Ash (POFA) and Fly Ash (FA) can be used as supplementary cementing material (SCM) in concrete. Both materials have their own significant effects on the properties of concrete and have been accepted by using them for the improvement of workability and strength of concrete. However, studies showed that FA has better pozzolanic properties than POFA. Hence, properties of mortars blended with POFA (untreated and treated) as binary blend (CUP and CTP) and ternary blend that combined with FA (CUPF and CTPF) as cement replacement were investigated. Unground POFA has been used in this study. CUPF and CTPF resulted in significant improvement in the pozzolanic activity compared to CUP and CTP of mortar mix. Pozzolanic activity of ternary blend mortar achieved the specified pozzolanic activity index of 75% based on ASTM C618. Compressive strength of the C80P15F5 concrete with 15% of treated POFA + 5% of FA by weight of binder showed a slightly higher result compared to the control mix. It is suggested that the combination of POFA and FA as pozzolanic material will improves the mechanical properties of mortars and concrete.
Information Security Risk Management with Octave Method and ISO/EIC 27001: 2013 (Case Study: Airlangga University) Sulistyowati, Indri; Ginardi, R. V. Hari
IPTEK Journal of Proceedings Series No 1 (2019): 4th International Seminar on Science and Technology 2018 (ISST 2018)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2019i1.5103

Abstract

Airlangga University has implemented ISO 27001: 2013 in asset-based information security governance, covering information assets, software assets, hardware assets, and human resources assets. However, many vulnerabilities in university computing systems can not be mitigated properly, as evidenced by the continued hacking of university computing systems. It shows that the results of hacking tests on university computing systems are not identified in more detail and are not included in university risk management. The purpose of this research is to build a university information security risk management framework using OCTAVE method based on ISO / EIC 27001: 2013. This research uses the OCTAVE framework to build a risk management framework model. The measurement method will be done by qualitative method to measure the severity and the likelihood of each asset and quantitative method to measure the potential loss on the cost of each asset. The results of this research are expected to provide an information security risk management framework, so that the vulnerability and financial lost analysis of each asset can be a risk, and risk mitigation plans on each asset may consider vulnerability and return of investment
Rubber Strap Quality Improvement by Optimization of Tensile Strength and Time Curing Using Response Surface Methodology Erwanto, Jefri; Su’ef, Mok.
IPTEK Journal of Proceedings Series No 5 (2019): The 1st International Conference on Business and Management of Technology (IConBMT)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2019i5.6298

Abstract

This paper will demonstrate combination of optimum response for Tensile strength and Time curing which are obtained by combining elastomer, filler and co-accelerator at optimum level factors is the best way to overcome defect products. Data from this study will be obtained from 15 direct experiments based on RSM by using box-behnken design-Minitab 18 and response optimization was performed to get optimal response value combination from the expected target response. The analysis shows that all factors including elastomer, filler and co-accelerator have significant effect on tensile strength and time curing responses. The best composition to get the optimal combination of responses from certain response limits is elastomer = 70PHR, filler = 30PHR, and co-accelerator = 1.47PHR. The optimum value for tensile strength response is 15 kg/cm2 and time curing is 3.5 minutes. Beside as a solution for this problem, this optimization will increase production capacity of rubber strap 12.5% more that the factory decide to decrease production line and choose market development strategy to overcome access production and labor to new product base on polyurethane
The Effect of pH on Synthesis of Hydroxyapatite from Geloina Coaxans Shell Yanti, Pepi Helza; Nia, Nia
IPTEK Journal of Proceedings Series No 4 (2017): 2nd International Seminar on Chemistry 2016
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2017i4.3073

Abstract

The effect of pH on synthesis of hydroxyapatite from Geloina coaxans shell has been done by precipitation method. Geloina coaxans shells and several phosphate sources (NH4)2 HPO4 and H3PO4 were used as precursors on synthesis of HAp. Synthesis of HAp was done with molar ratio of precursors 1,67 and pH of solution were varied at 10, 12, 13, and 14. The result proved that nano-HAp can be obtained successfully and shown that pH value was a significant parameter variable on synthesis HAp that can influence crystalinity and purity of HAp. Using Schererr equation, particle size of HAp powder of (NH4)2HPO4 was 26,69 while H3PO4 was 40 nm respectively
Development strategy of culinary business employing the Blue Ocean Strategy (BOS) Ardian, S; Syairudin, B
IPTEK Journal of Proceedings Series No 3 (2018): International Conference on Industrial and System Engineering (IConISE) 2017
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2018i3.3722

Abstract

Culinary business development is now growing quite rapidly, Surabaya became one of the target markets of domestic and foreign businessmen in culinary business. The high competition in the culinary business is a powerful reason to apply the right business strategy to be able to survive and win the competition. One of the method that can be used in offering business strategy is the Blue Ocean Strategy (BOS). By identifying the strengths, weaknesses, opportunities and threats (SWOT) of the business strategy and then designing the blue ocean strategy which is taken as a metaphor to represent these industries that may offer greater opportunity or higher profit potential. This is the goal of blue ocean strategy, to search for and gain unexplored market space instead of engage in traditional competition. The object of observations in this study is spicy noodle business. This study aimed atdeveloping a business strategy formulation with BOS and providing alternative solutions for business development to the management that agree with the socio-cultural conditions of Surabaya. The results showed that there are two strategies that should be eliminated, like the strategiesof offeringfranchise without royalty fees and no separation of smoking and non-smoking area. There are three strategies that should be reduced, such as reducing educative wall posters, reducting door prizes and photo contest, and reducing the amount of franchise. There are six strategies that can be improved, namely increasing serving time, being efficient of tables arrangement, providing employment for local residents, strategic location closes to several colleges, photobooth (selfie corner) for consumers and increasing the uniquenessconcept of the shop. The alternative solutions of business development can be done by adding facilities such as Wi-Fi connection and air conditioning (AC) installationto comfort theconsumers,guest comment (online and offline suggestion box), and membership (visitors’ ID).
A Concept of Decision Making in Land Productivity: Combining Highest & Best Use and Analytic Network Process Azizah, Urifatul; Utomo, Christiono
IPTEK Journal of Proceedings Series No 1 (2019): 4th International Seminar on Science and Technology 2018 (ISST 2018)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2019i1.5121

Abstract

Understanding the concept of using the highest and best market is essential. Market forces will determine the creation of market value. To reach the equilibrium point, what the stakeholder wants is their desire is accep and provide optimal satisfaction (utility). To develop into a commercial property area it is necessary to analyse the most feasible and permitted land use permits, financially feasible and highest land productivity. Highest and best use (HBU) with feasibility requires interrelated criteria, therefore data and indirect consideration are required in additional research. Analytic Network Process (ANP) is a decision-making problem. It cannot be structured hierarchically because it leads to interaction and determines a higher level in the lower element. Not only are criteria that define alternatives as in hierarchy, but this is also an alternative can be important by using Analytic Network Process (ANP). This Paper is a conceptual based on literature review. A set of previous research are analysis to get the synthesis of the highest and best use (HBU) and the analytic network process (ANP) on land productivity decision making. A model is resulted to present the combination of four criteria of HBU into ANP
Correlation Between Visual Improvement and Behavior Change of Municipal Solid Waste Management in Jodipan and Ksatrian Village, Indonesia Sarli, Prasanti Widyasih; Zakiyya, Nida Maisa; Soewondo, Prayatni
IPTEK Journal of Proceedings Series No 6 (2017): The 3rd International Conference on Civil Engineering Research (ICCER) 2017
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2017i6.3302

Abstract

Indonesia, as a developing country, has many slum areas. Over the years, there have been many projects specifically targeting the improvement of slum areas, both at a national or regional level. One example of such project can be observed in Malang City, East Java, where visual improvements of a slum area is attempted by the application of colorfull paints throughout the settlements. Two of the initial projects are Jodipan and Ksatrian Village that are located on the riverside area of Brantas River, one of the biggest river in East Java. The original idea firstly came to Jodipan Village to improve the cleanliness of the area. As the Jodipan Village improved, this village became a local tourism area. Due to its success, the painting project was then adopted to the Ksatrian Village across the river. Before the project, the residents of the villages were used to throw their municipal solid waste to the river. Since the improvement projects ran, it has been found that the improvement can be linked to residents’ awareness for municipal solid waste management. This study focuses on the correlation of visual improvement and behavior change of municipal solid waste; and the differences between the correlations in each village (Jodipan and Ksatrian). A descriptive model was done by observation and questionnaire to the 48 residents of Jodipan Village and 69 residents of Ksatrian Village, with a tolerance for error of 0,1 and confidence level of 90%.
A Numerical Analysis of Wind Flow in Urban Areas Kim Dung Hoang, Thi; Nguyen, Phu Khanh
IPTEK Journal of Proceedings Series No 6 (2017): The 3rd International Conference on Civil Engineering Research (ICCER) 2017
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2017i6.3320

Abstract

The high population density in Vietnam create many challenges in its urban development and supply of residential housing. To accommodate the large population, the buildings tend to go vertical and high density to maximize the development ratio in the limited land space and in the conservation of natural geomorphology. The high density of building blocks reduces the permeability for wind penetration. In the extreme case, the housing estate becomes a wind-obstructing structure that could be causing to environmental problems and health hazard due to low level of ventilation follow. So, a better understanding about wind flow in urban areas could help resolve some of the main difficulties that a designer might encounter to improve the geometries of urban areas. Therefore, this article performs the simulation methodology using Computational Fluid Dynamics (CFD) tools in ANSYS FLUENT software to carry out the urban wind environment in the simple planning and design urban areas. The studied parameters were wind velocity 10 m/s in the case of straight wind and in the case of 450-cross wind. CFD is an effective and efficient tool to visualize a flow phenomenon of a particular flow problem. The advanced computational technique could calculate the fluid properties at all points defined within the model domain, providing a complete set of data within the model. However, it is important to highlight that CFD technologies have not been completely reliable as model assumptions are still unavoidable for the present computational technologies to resolve turbulent flows. Understanding the limitations of CFD is crucial to reduce numerical errors and realize possible erroneous data in the model.
Desain Ipal Komunal Limbah Domestik Perumahan Sukolilo Dian Regency dengan Teknologi Constructed Wetland Prakoso, Dandy; Tangahu, Bieby Voijant
IPTEK Journal of Proceedings Series No 5 (2017): Simposium I Jaringan Perguruan Tinggi untuk Pembangunan Infrastruktur Indonesia (2016)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2017i5.3140

Abstract

Constructed wetland merupakan  sistem  pengolahan  terencana atau terkontrol yang telah didesain dan dibangun menggunakan proses alami yang  melibatkan  vegetasi,  media,  dan  mikroorganisme  untuk  mengolah  air  limbah domestik. Constructed wetland cocok untuk diterapkan di perumahan, sehingga teknologi ini cocok menjadi alternatif pengolahan limbah domestik. Perumahan Sukolilo Dian Regency (SDR) merupakan salah satu perumahan yang belum memiliki IPAL untuk mengolah greywater, sehingga teknologi ini bisa diterapkan di perumahan ini untuk meningkatkan kualitas sanitasi lingkungan. Perencanaan sistem IPAL di Perumahan SDR mempertimbangkan aspek kuantitas dan kualitas air limbah domestik yang dihasilkan setiap harinya. Kualitas air limbah domestik menunjukkan nilai COD 320 mg/L; BOD 123 mg/L; dan TSS 60 mg/L. Sedangkan kuantitas air limbah menunjukan 453 m3/hari. Kemudian dilakukan analisis perhitungan masing-masing unit IPAL yang akan direncanakan di perumahan SDR agar sesuai dengan kriteria baku mutu pergub jatim no. 72 tahun 2013. Sistem IPAL direncanakan terdiri dari unit bak ekualisasi, Subsurface Flow Constructed Wetland dengan tanaman cattail, dan kolam indikator. Hasil perencanaan menunjukkan efisiensi pengolahan seluruh sistem untuk COD, BOD, dan TSS masing-masing sebesar 86%, 80%, dan 46%, dengan efisiensi tersebut effluent limbah cari IPAL telah memenuhi baku mutu yang ditentukan. Biaya investasi seluruh sistem constructed wetland diperkirakan sebesar Rp 5.926.417.781. Perencanaan ini menghasilkan panduan untuk operasional dan perawatan.
The Effects of Mobile Payment Dimensions toward Continuance Intention in Surabaya Sandra Yunita; Erna Andajani
IPTEK Journal of Proceedings Series No 1 (2020): The 1st International Conference on Business and Engineering Management (IConBEM)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i1.10861

Abstract

The 4.0 industrial revolution allows people to make payments using mobile devices which is called mobile payment. Mobile payment users in Indonesia have enlarged a significant improvement in the last few years. However, the use of mobile payment in Indonesia has not dominated yet. Most of the payments that they use are ATM Transfers, debit cards, and internet banking. These indicate the lack of continuance intention in using a mobile payment. The aim of this study is to examine the effects of mobile payments dimension (mobility, customization, security, reputation), service quality toward continuance intention through trust, and also the effects of trust toward continuance intention through perceived risk. The data used in this study are obtained through a research questionnaire. Respondents in this study were 170 Go-Pay and OVO users domiciled in Surabaya who made transactions with Go-Pay and OVO at least twice in the last few months. The sampling method of this study was non-probability sampling. This study uses a quantitative approach with the Structural Equation Modeling (SEM) method for statistical test. SEM analysis was carried out using the Analysis of Moment Structures (AMOS). The results of this study indicate that mobility and security have a significant positive effect on trust. On the other hand customization, reputation, and service quality do not affect trust. Trust has a significant positive effect on continuance intention and perceived risk. Meanwhile, the perceived risk made a significant negative effect on continuance intention.

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